Composite material bulletproof helmet molding mold and application, the mold includes a core and a cavity, wherein the cavity is an integral cavity, and the core is a combined core, including a core support platform, a core crown and a core set at The side wall of the core around the crown of the core, the side wall of the core is fixed on the core support platform, the elastic support is fixed in the cavity enclosed by the side wall of the core, and the crown of the core is connected to the elastic support; Under the gravity of the core head crown, the height of the elastic support is greater than the depth of the cavity enclosed by the core side wall; at the maximum compression stroke of the elastic support, the core head crown and the core side wall constitute a complete Core. During the mold clamping process, the UD laminate material on the crown of the helmet is always kept pressed, realizing the simultaneous compression of the UD laminate material at the side wall and the crown.
Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the molding material has cured.
UD/KEVLAR product mould
UHMWPE is commonly known as very high molecular weight polyethylene. Its molecular weight can reach 1 to 5 million. It has high wear resistance, low friction coefficient, high impact resistance, and better sound-absorbing performance. Compared with ordinary thermoplastics, it has lower fluidity and is difficult to process. At present, it can only be produced by molding. Our company cooperated with the *** unit, using its good impact resistance, developed the body armor and bulletproof helmet molds, realized segmented pressurization and heating on a pair of molds, and switched the heating mold to cooling in the later stage of molding. The mold ensures that the product is cooled and shaped to the set temperature and set material hardness, ensuring that the product can be easily taken out of the mold.
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